CN204760996U - Power cable T type connecting terminal - Google Patents

Abstract

The utility model discloses a T-shaped connecting terminal for power cables, which comprises a T-shaped connecting terminal body, which is an integral part integrating an internal connecting conductor and an external hard insulating sleeve, and the connecting conductor is insulated and sealed in the hard insulating sleeve. Among them, the connecting ends of the connecting conductors are all threaded connection structures. The connecting terminal body is equipped with a head, a cover, a rubber pad and a stress tube. The connecting terminal body is integrated with the cable through the threaded lug, stress tube, rubber pad, hard insulating cover and cable. The cable core is in an insulating and closed state. The connection between the wall bushing and the live connection member of the electrical equipment only needs to rotate the butt joint. Before the connecting terminal body is connected, the connecting conductor is insulated and sealed, and the connecting point of the connecting conductor is in the arc extinguishing chamber of the hard insulating sleeve. The process is simple and flexible.

Description

Power cable T-type connection terminal

technical field

The utility model relates to a high-voltage cable connection terminal, in particular to a T-shaped connection terminal for power cables.

Background technique

In the past, the domestic cable connection terminals were all exposed, easy to discharge, short circuit, electric shock, and many potential safety hazards. The cable connection components of the European-style cable branch box are equipped with insulating jackets to prevent discharge, short circuit, and electric shock. However, the metal conductors in the connection terminals The external insulator is a separate piece, so when the connecting terminal is connected to the wall bushing or the live connection member of the electrical equipment, the connection between the internal conductor and the external insulator needs to be carried out one by one, the process is cumbersome, the operation flexibility is not strong, and it takes a long time; And the operation process cannot be carried out with electricity, which affects the reliability of power supply, has a great impact on production and life, and causes economic losses.

Utility model content

The purpose of the utility model is to provide a T-shaped connecting terminal of a power cable which is easy to operate and can be connected with electricity.

The utility model discloses a T-shaped connecting terminal for power cables, which comprises a T-shaped connecting terminal body. The connecting terminal body is an integral part integrating an internal connecting conductor and an external hard insulating sleeve. The connecting conductor is insulated and sealed in a hard In the insulating sleeve, the connection ends of the connecting conductors are all threaded connection structures. The shape of the connecting conductors is T-shaped, with two internal thread interfaces and one external thread joint. One of the two ends of the coaxial line is an external thread joint, and the other end is For the internal thread interface.

The shape of the hard insulating sleeve is T-shaped, and there is a T-shaped hole in it, and the connecting conductor is embedded in the T-shaped hole. The length of the hard insulating sleeve is greater than the length of the connecting conductor, and its two ends in the coaxial direction The external thread joint end corresponding to the connecting conductor forms the arc extinguishing chamber I, the other end forms the arc extinguishing chamber II, and the lower part in the other direction forms a cable connection chamber, which is equipped with a stress tube, and the outer wall of the cable connection chamber has a grounding lead The connecting hole and the end of the outer wall of the cable connection are connected with a hard insulating cover through external threads.

The inner space of the arc extinguishing chamber I of the hard insulating sleeve is larger than the inner space of the arc extinguishing chamber II.

The two ends of the coaxial line of the connecting terminal body are equipped with a screw-type head and a spiral-shaped head that integrate an inner conductor and an outer hard insulator, and the inner conductor is embedded in the axial center of the outer insulator; the spiral-type head The internal conductor is a metal coil with a positioning ring, and the part of the hard insulator embedded with the metal coil protrudes outward; the internal conductor of the screw-type head is a metal screw with a positioning ring, and the longitudinal section shape of the hard insulator is U type, the metal screw is insulated and sealed in the axial center of the hard insulator, and the outer end face of the metal screw is located in the open end face of the hard insulator; the spiral tube type head is inserted into the arc extinguishing chamber of the hard insulating sleeve with a protruding section I is threadedly connected with the screw section of the connecting conductor; the screw type head is sleeved on the outside of the hard insulating sleeve with its hard insulator, and the inner conductor is threaded with the internal threaded hole of the connecting conductor, and the head is insulated and sealed. A rubber pad set on the male threaded joint.

There is a stepped hole in the axial center of the hard insulating cover, and the large-diameter end of the stepped hole is an internal threaded hole.

The hard insulating cover, the screw-shaped head and the spiral-shaped head are all equipped with rubber pads when connected to the connecting terminal body.

The cable is first crimped with the threaded head lug into one body, and the threaded head lug and the connecting terminal body of the utility model are integrally connected by thread. When in use, the sealing head is removed and connected to the wall bushing or the live connection member of the electrical equipment through the butt joint. When the butt joint is connected to the wall bushing or the live connection member of the electrical equipment and the connection terminal body, because the connection conductor of the connection terminal body is completely insulated and enclosed in a hard insulating sleeve, the connection of the connection conductor is in the arc extinguishing chamber, when the staff operates Only the insulating material is in contact, so that the connecting terminal body can realize the live connection operation, thereby reducing the scope of power failure and facilitating safe power supply. The operation is simple, only need to rotate the butt joint when installing and removing.

In order to ensure the cleanness and dryness of the connecting terminal body and the integrity of its thread, the connection end of the connecting terminal body is first sealed with a head; the setting of the rubber pad can prevent loosening between adjacent connecting parts and has the effect of waterproofing and moisture-proofing.

Description of drawings

Fig. 1 is a schematic diagram of an exploded structure of an embodiment of the present invention.

Detailed ways

As shown in Figure 1, this embodiment discloses a T-shaped connection terminal for power cables, which includes a T-shaped connection terminal body, which is an integrated integral part of the inner connection conductor 1 and the outer hard insulating sleeve 2 , The connecting conductor 1 is insulated and enclosed in a hard insulating sheath 2 .

The shape of the connecting conductor 1 is T-shaped, and has two internal thread interfaces and one external thread joint, wherein one of the two ends of the coaxial line is an external thread joint, and the other end is an internal thread interface. The shape of the hard insulating sleeve 2 is T-shaped, and there is a T-shaped hole in it. The connecting conductor 1 is embedded in the T-shaped hole. The length of the hard insulating sleeve 2 is greater than the length of the connecting conductor 1. The arc extinguishing chamber I21 and the arc extinguishing chamber II22 are respectively formed. The inner space of the arc extinguishing chamber I is larger than the inner space of the arc extinguishing chamber II, and the lower part in the other direction forms a cable connection chamber 23, which is equipped with a stress tube 3. The outer wall of the cable connection chamber 23 has a ground lead connection hole 24, and the end of the outer wall of the cable connection chamber 23 is connected with a hard insulating cover 4 through an external thread.

The two ends of the coaxial line of the connecting terminal body are equipped with a screw-shaped head 6 and a spiral-shaped head 5 integrating an inner conductor and an outer hard insulator respectively, and the inner conductor is embedded in the axial center of the outer insulator. The inner conductor of the helicoidal head 5 is a metal helix with a positioning ring, and the part of the hard insulator embedded with the metal helix protrudes outward. The internal conductor of the screw-type head 6 is a metal screw with a positioning ring, the longitudinal section of the hard insulator is U-shaped, the metal screw is insulated and closed at the axial center of the hard insulator, and the outer end surface of the metal screw is located at the center of the hard insulator. inside the open end.

The spiral tube type head 5 is inserted into the arc extinguishing chamber 1 of the hard insulating sheath 2 with a protruding section and is threadedly connected with the screw section of the connecting conductor. The screw type head 6 is sleeved on the outside of the hard insulating sleeve 2 with its hard insulator, and the inner conductor is connected with the internal threaded hole of the connecting conductor 1 .

There is a stepped hole in the axial center of the hard insulating cover 4, and the large diameter end of the stepped hole is an internally threaded hole.

When the hard insulating cover 4, the screw-type head 6 and the screw-type head 5 are connected to the connecting terminal body, rubber pads 7 are provided to protect the thread and keep the connecting conductor clean and dry.

When this connection terminal is in use, first remove the hard insulating cover, put the hard insulating cover on the cable end, then put the rubber pad and stress tube on the cable end, connect the cable core of the cable end with the The threaded lugs are crimped as one; then insert the threaded lugs into the cable connection chamber, clamp the hexagonal section of the outer wall of the hard insulating sleeve with an insulating wrench to rotate the connecting terminal body to securely fix the threaded lugs, and finally The stress tube is pushed into the cable connection chamber, and the hard insulating cover is tightened on the lower end of the hard insulating sleeve, so far the cable and the connecting terminal body are connected into one body. The connecting terminal body can be connected with the wall bushing and the live connection member of the electrical equipment by matching with a suitable butt joint.

In order to ensure the cleanness and dryness of the connecting terminal body and the integrity of its thread, the connecting end of the connecting terminal body is first sealed with a head; in order to make the connection operation faster, the wrench clamping section on the connecting terminal body is a hexagonal section ; The setting of the rubber pad can prevent loosening between adjacent connecting parts and has the function of waterproof and moisture-proof.

Claims (6)

1. the T-shaped splicing ear of power cable, it is characterized in that: it comprises T-shaped splicing ear body, splicing ear body is the single piece of inner bonding conductor and the integration of outside rigid insulation cover, bonding conductor insulation and obturation is in rigid insulation cover, the link of bonding conductor all adopts screw connection structure, the shape of bonding conductor is T-shaped, has two internal thread interfaces and a male connection, and in the two ends of wherein coaxial line, one end is male connection, the other end is internal thread interface.

2. the T-shaped splicing ear of power cable according to claim 1, it is characterized in that: the shape of described rigid insulation cover is T-shaped, T-shaped hole is had in it, described bonding conductor is flush-mounted in T-shaped hole, the length of rigid insulation cover is greater than the length of bonding conductor, in the two ends in its coaxial line direction, the male connection end of corresponding described bonding conductor forms arc control device I, the other end forms arc control device II, cable joining room is formed at the bottom in another direction, stress tube is furnished with in it, the outer wall of cable joining room has ground lead connecting hole, cable joining room outer wall end is connected with rigid insulation capping by external screw thread.

3. the T-shaped splicing ear of power cable according to claim 2, is characterized in that: in the arc control device I of described rigid insulation cover, empty size is greater than the interior empty size of arc control device II.

4. the T-shaped splicing ear of power cable according to claim 3, it is characterized in that: two ends supporting screw type end socket and the solenoid type end socket having inner conductor and the integration of external hard plastic insulator respectively of described splicing ear body coaxial line, the axial centre of inner conductor setting-in outer insulator;

The inner conductor of solenoid type end socket is the metal coil of band locating ring, and the part of rigid insulation body encasing metal screwed pipe is protruded outward; The inner conductor of screw type end socket is the metal screw of band locating ring, and the vertical sectional shape of rigid insulation body is U-shaped, and metal screw insulation and obturation is in the axial centre of rigid insulation body, and the outer face of metal screw is positioned at the openend end face of rigid insulation body;

Solenoid type end socket inserts in the arc control device I of described rigid insulation cover with convex section and is threaded with the spiro rod section of bonding conductor; Screw type end socket is placed on outside described rigid insulation cover with its rigid insulation body, inner conductor is threaded with the internal thread hole of described bonding conductor.

5. the T-shaped splicing ear of power cable according to claim 2, is characterized in that: the axial centre of described rigid insulation capping has shoulder hole, and the bigger diameter end of shoulder hole is internal thread hole.

6. the T-shaped splicing ear of power cable according to claim 4, is characterized in that: all supporting rubber blanket when described rigid insulation capping, screw type end socket and solenoid type end socket are connected with described splicing ear body.